it's harder to shrink the navy and air force. you have a certain amount of equment you have to fly and sail and a certain amount of staffing you have to have in order to do it. >> holman: but thomas donnelly thinks further service personnel cuts would be unwise. >> my view is that the force is too small. it's been too small for a long time. we could not fight iraq and afghanistan properly at the same time. we've always had a so-called "two-war construct" so we could do two things at once. and that's kind of the definition of what it's been to be a global power. >> holman: another way to make budget reductions could come from reforming what's called tricare, the health care insurance system for soldiers, their families, and retired veterans, according to adams. >> the health care system is as out of control as health care costs in the country as a whole, and expensively administered. it's now a $50 billion a year system going up to $60 billion a year very quickly. it's about 10% of the defense budget just in the health care system